After the Colonial period’s 50 percent mortality rate,
life expectancy improved for children, but as late as
the nineteenth century about one child in three died
before reaching the age of six.

(A) After the Colonial period's 50 percent mortality
rate, life expectancy improved for children, but
(B) Even though children's life expectancy, which unchanging
improved over the Colonial period's 50 percent
mortality rate,
(C) Although life expectancy for children improved unchanging
after the Colonial period, during which the
mortality rate was 50 percent,
(D) While there was an improvement in life unchanging
expectancy for children after the 50 percent
mortality rate of the Colonial period, still
(E) Despite children's life expectancy improvement for life
from the Colonial period's 50 percent mortality rate